Multiband Printed Monopole Slot Antenna for WWAN Operation in the Laptop Computer

Author

Wong, Kin-Lu ; Lee, Li-Chun

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung

Volume

57

Issue

2

fYear

2009

Firstpage

324

Lastpage

330

Abstract

A multiband printed monopole slot antenna promising for operating as an internal antenna in the thin-profile laptop computer for wireless wide area network (WWAN) operation is presented. The proposed antenna is formed by three monopole slots operated at their quarter-wavelength modes and arranged in a compact planar configuration. A step-shaped microstrip feedline is applied to excite the three monopole slots at their respective optimal feeding position, and two wide operating bands at about 900 and 1900 MHz are obtained for the antenna to cover all the five operating bands of GSM850/900/1800/1900/UMTS for WWAN operation. The antenna is easily printed on a small-size FR4 substrate and shows a length of 60 mm only and a height of 12 mm when mounted at the top edge of the system ground plane or supporting metal frame of the laptop display. Details of the proposed antenna are presented and studied.

Keywords

3G mobile communication; cellular radio; laptop computers; microstrip antennas; monopole antennas; multifrequency antennas; radiotelephony; slot antennas; wide area networks; GSM1800; GSM1900; GSM850; GSM900; UMTS; WWAN operation; compact planar configuration; frequency 1900 MHz; frequency 900 MHz; internal antenna; multiband printed monopole slot antenna; optimal feeding position; quarter-wavelength modes; step-shaped microstrip feedline; thin-profile laptop computer; wireless wide area network; Antenna feeds; Application software; Computer networks; Microstrip antennas; Mobile antennas; Mobile handsets; Portable computers; Receiving antennas; Slot antennas; Wide area networks; Internal laptop computer antennas; WWAN antennas; monopole slot antennas; multiband antennas; quarter-wavelength slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2008.2011391

Filename

4804089